Electronic structure formed by Y2O3-doping in lithium position assists improvement of charging-voltage for high-nickel cathodes

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

High-capacity power battery can be attained through the elevation of cut-off voltage for LiNi0.83Co0.12Mn0.05O2 high-nickel material. Nevertheless, unstable lattice oxygen would released during lithium deep extraction. To solve above issues, electronic structure is reconstructed by substituting Li+ ions with Y3+ ions. The dopant within Li layer could transfer electrons to adjacent oxygen. Subsequently, accumulated in site are transferred nickel highly valence state under action reduction coupling mechanism. modified strategy suppresses generation defects regulating local structure, but more importantly, it reduces concentration reactive Ni4+ species charging state, thus avoiding evolution an unexpected phase transition. Strengthening strength between layers and transition metal finally realizes fast-charging performance improvement cycling stability enhancement high voltage. Authors report on restructuring a material This mechanism improving high-voltage stability.

Language: Английский

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Lithium-ion battery cell formation: status and future directions towards a knowledge-based process design

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(8), P. 2686 - 2733

Published: Jan. 1, 2024

This review examines the key process of lithium-ion battery cell formation. Influencing factors, challenges, experimental and simulation tools required for knowledge-based design current emerging technologies are addressed.

Language: Английский

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Recent Progress in Improving Rate Performance of Cellulose-Derived Carbon Materials for Sodium-Ion Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: March 11, 2024

Cellulose-derived carbon is regarded as one of the most promising candidates for high-performance anode materials in sodium-ion batteries; however, its poor rate performance at higher current density remains a challenge to achieve high power batteries. The present review comprehensively elucidates structural characteristics cellulose-based and cellulose-derived materials, explores limitations enhancing arising from ion diffusion electronic transfer level proposes corresponding strategies improve targeted various precursors materials. This also presents an update on recent progress with particular focuses their molecular, crystalline, aggregation structures. Furthermore, relationship between storage sodium elucidated through theoretical calculations characterization analyses. Finally, future perspectives regarding challenges opportunities research field anodes are briefly highlighted.

Language: Английский

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Zinc Chemistries of Hybrid Electrolytes in Zinc Metal Batteries: From Solvent Structure to Interfaces

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(47)

Published: Oct. 7, 2024

Abstract Along with the booming research on zinc metal batteries (ZMBs) in recent years, operational issues originated from inferior interfacial reversibility have become inevitable. Presently, single‐component electrolytes represented by aqueous solution, “water‐in‐salt,” solid, eutectic, ionic liquids, hydrogel, or organic solvent system are hard to undertake independently task of guiding practical application ZMBs due their specific limitations. The hybrid modulate microscopic interaction mode between Zn 2+ and other ions/molecules, integrating vantage respective electrolyte systems. They even demonstrate original mobility pattern chemistries mechanism distinct electrolytes, providing considerable opportunities for solving electromigration problems ZMBs. Therefore, it is urgent comprehensively summarize principles, characteristics, applications various employed This review begins elucidating chemical bonding physicochemical theory, then systematically elaborates structure, migration forms, properties, mechanisms at anode/cathode interfaces each type electrolytes. Among which, scotoma amelioration strategies current actively exposited, expecting provide referenceable insights further progress future high‐quality

Language: Английский

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Economical and Ecofriendly Lithium-Ion Battery Recycling: Material Flow and Energy Flow

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(7), P. 2511 - 2530

Published: Feb. 5, 2024

Since 1990, lithium-ion batteries (LIBs) have been booming in the last decades. Because they are ecofriendly and rechargeable, LIBs widely used portable devices, electric vehicles, even satellites aerospace. However, limited lifespan intensive growth of spent result serious accumulation depletion to hazardous waste. This review critically summarizes state-of-the-art scrapped on recycling benefits national policies. Also advantages disadvantages various technologies efficiency, electrochemical performance restored materials, economic environmental issues compared discussed. A green, feasible, sustainable strategy with high efficiency for (including cathodes, anodes, electrolytes, other metallic materials) is explored discussed detail. Finally, mode, challenges, developing tendency battery production, design, management system put forward speculated.

Language: Английский

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Designing Current Collectors to Stabilize Li Metal Anodes

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.

Language: Английский

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Advanced pseudocapacitive lithium titanate towards next-generation energy storage devices

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Viologen as an Electrolyte Additive for Extreme Fast Charging of Lithium‐Ion Batteries

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

ABSTRACT Although lithium‐ion batteries (LIBs) have found an unprecedented place among portable electronic devices owing to their attractive properties such as high energy density, single cell voltage, long shelf‐life, etc., application in electric vehicles still requires further improvements terms of power better safety, and fast‐charging ability (i.e., 15 min charging) for driving range. The challenges fast charging LIBs limitations low transport the bulk solid electrode/electrolyte interfaces, which are mainly influenced by ionic conductivity electrolyte. Therefore, electrolyte engineering plays a key role enhancing capability LIBs. Here, we synthesize novel propionic acid‐based viologen that contains 4,4′‐bipyridinium unit terminal carboxylic acid group with positive charges confine PF 6 ‒ anions accelerate migration lithium ions due electrostatic repulsion, thus increasing overall rate capability. LiFePO 4 /Li cells 0.25% added show discharge capacity 110 mAh g ‒1 at 6C 95% retention even after 500 cycles. not only enhances electrochemical properties, but also significantly reduces self‐extinguishing time.

Language: Английский

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High‐Performance Silicon Anodes Enabled by Multifunctional Ultrafine Silica Nanoparticle‐Embedded Carbon Coatings for Lithium‐Ion Batteries

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Abstract Silicon (Si) holds immense promise as viable anode for next‐generation high‐energy‐density Li‐ion batteries (LIBs). However, its poor ionic/electronic conductivity and significant volumetric changes during cycling lead to rapidly deteriorated LIB performance. Here, a novel multifunctional coating featuring ultrafine SiO 2 nanoparticles (<7 nm) embedded carbon on Si (termed Si@uSiO ‐C) resolve these challenges is proposed. This unique uSiO ‐C provides high‐efficient electron ion transport pathways, while also improves interfacial stability mitigates volume cycling, thereby enhancing the structural integrity of ‐C, corroborated by extensive experimental computational studies. In addition, abundant interfaces in facilitate Li + evenly distributed impart high electrochemical reactivity mechanical robustness. Consequently, achieves reversible capacity 2093 mAh g −1 at 0.2 A , with initial Coulombic efficiency 88.3%, superior rate capability durability (1000 cycles, 928 1.0 75% retention). Full cells paired commercial LiFePO 4 cathodes demonstrate cyclability, maintaining 80% retention over 500 cycles C. work highlights vital role promoting performance Si‐based anodes high‐performance LIBs.

Language: Английский

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Interfacial MXene engineering enabled lamellar lithium nucleation for dendrite-free lithium anodes

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236451 - 236451

Published: Feb. 4, 2025

Language: Английский

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